Preparation of BaCe0.9Yb0.1O3-δ asymmetrical membrane for hydrogen separation at high tempratures
A mixed proton–electron conducting perovskite was synthesized by liquid-citrate method and the corresponding membrane was prepared by pressing followed by sintering. The hydrogen permeability of BaCe0.9Yb0.1O3-δ was studied as a function of temperature and hydrogen partial pressure (PH2) gradient. U...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Reaserch Institute of Petroleum Industry
2011-08-01
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| Series: | Journal of Petroleum Science and Technology |
| Subjects: | |
| Online Access: | https://jpst.ripi.ir/article_55_ee64efebb9fb3f290004415e7deecc9f.pdf |
| Summary: | A mixed proton–electron conducting perovskite was synthesized by liquid-citrate method and the corresponding membrane was prepared by pressing followed by sintering. The hydrogen permeability of BaCe0.9Yb0.1O3-δ was studied as a function of temperature and hydrogen partial pressure (PH2) gradient. Using 100% dry hydrogen at 1173 K, the hydrogen permeation rate of dense membranes (1.63 mm thick) for a mixture of 60% H2/He was 0.000293 mol/(m<sup>2</sup> s). The phase structure of powder was characterized by X-ray diffraction and thermogravimetry (TG). Scanning electron microscopy (SEM) was used to investigate the microstructure of sintered membrane. Activation energy estimated with Arrhenius equation was 29 kJ/mol. |
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| ISSN: | 2251-659X 2645-3312 |